How do I get grease off my kitchen cabinets?

There is a product called Krud Kutter that works really well. I would test your cabinets in an area that's not so obvious especially if it's a painted surface.

TSP will be your best bet. Rinse them well when done.

Try Dove dish soap or another good one, mix a bucket up with a bit more soap than normal and scrub them, or get a kitchen degreaser from a restaurant supplier or Home Depot if it’s thick or older and solidified.

Vinegar and water. Use about 2 to 4 ratio. Vinegar and water will clean anything.